Feminized marijuana seeds are the result of a scientific process meant to produce only female seeds. The process involves forcing female plants to produce pollen sacs which are then used to pollinate other female marijuana plants. When a female plant is forced to produce pollen sacs, it can be expected that the pollen coming out of it will have female genes and when matched with another female, then it will have the natural tendency to produce only female seeds.
Growing only female plants is one of the surest ways to ensure that they will remain sensimilla because of the absence of male plants in the growing area. There are several approaches to making feminized marijuana seeds such as the Colloidal Silver Spray, Rodelization and many others.